Boat construction



July l, 1930. l F G, GRAMM i 1,769,831

BOAT CONSTRUCTION Filed July 8, 1929 sheets-sheet 1 Jaffe,

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ATTORNEY Fatented July 1, 1930 UNITED STATES FRANK G. GRAMM, OF CORAO'iYJS, PENNSYLVANIA BOAT CONSTRUCTIQE? Application tiled Julyl 8,

This invention relates to a boat, the general object of the invention belng to construct the hull of the boat from' hanged plates, the ianges of which are'suitably con# a nected together, with spaced T irons connected with the plates for strengthening the same and other T irons extending at right angles to the first mentioned irons and having notches therein for recelvlng portions of said other irons whereby a hull is formed of considerable strength and one in which the sections may be formed in a shop and then the sections assembled where the boat is to be launched, andthe invention enables a boat to be constructed in the minimum amount of time and with the minimum amount of labor.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specically pointed out in the appended claim.

In describing the invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in whichz- Figure 1 is a transverse sectional view through a boat constructed in accordance with this invention, the section being taken on line 1-1 of Figure 2.

Figure 2 is a section on line 2--2 of Fig- 35 ure 1.

Figure 3 is a view of one of the plates used inthe construction of the boat.

Figure 4 is a view of the blank from which 'the plate is formed. .I

Figure 5 is a perspective view of part of the boat.

Figure 6 is a fragmentary longitudinal sectional view showing the plates riveted together. f

en As shown in these views, the central section A. of the boat is constructed of plates 1 each having two'o the opposing edges bent at right angles to form the flanges 2, these iianges either being welded together, as so shown in Figures 1 and 2, or riveted together 1929. sans aaa'zsa.

Yby the rivets 8, as shown-in Figure 6. When the flanges are riveted together packing strips 4 are placed between the flanges, as shown in Figure 6. One end of each plate is' formed with a slightly curved tongue 2 l5 to receive the opposite end of the next plate, as shown in Figure 2, the joggled seams extending transversely of the boat. These seams are formed by welding or otherwise.

Some of the plates are curved, as at 5, to form the side corners of the boat and each plate is strengthened by a plurality of spaced T irons C which extend longitudinally of the plates and the central section and the parts are still further strengthened by the T irons 7 which extend at rightangles to the members 6 and are notched, as at 8, to receive portions of the members 6. The T irons 7 are also notched to receive the an es of the plates. The flanges 2 are strengt ened 70 by the braces 9 which extend from the free edges of the anges to the plates. Some of the T irons 6 are arranged at the corners 5 and those.portions of these T irons which are connected with the plates are curved to conform with the curve of the plates.

The T irons 6 may be welded to the plates and they should be bowed a predetermined amount beforev welding to counteract contraction, due to the welding operation. They so may be spot welded in place and later a tractor type arc Welder can be used to weld the T irons to the plates. Two of the Ts can be welded at one time so that one operator could operate the two machines simultaneously, The struts or braces 9fcan also be welded in position or the various parts can be riveted together instead of being welded. The ends B of the boat may be formed the same as the central part thereof, or each end ma be formed as shown in Figure 2, which s ows the T irons 6 extending transversely of the boat and the T irons 7 extending longitudinally thereof. This view also shows the anges 2" of the plates extending 95 transversely. Of course, other shapes of beams may be used in place of the T irons and brace members l0 may be placed wherever desired. Bulkheads 11 are also placed wherever desired, these heads being formed 10 2 messer of plates notched to receive the beams and welded or otherwise fastened in place.

A boat, constructed according to this invention, will require no layout, punches, f, beveled shearing and no riveting when the 5 parts are welded to ether. The invention provides ilexibilit o desi and maximum strength, with minimum ead weight and also rovides the maximum ofy iiat welding whic is adaptable to various types of autolo matic welding. The parte are preferably assembled in sections and the arts welded or riveted together and then t e sections are swung into place and connected together.

Barges o any description, tow boats,

ntoons, dump scows and similar boats may constructed in accordance with this invention.

It is thought from the foregoin descrip. tion that the advanta es and nove features of the invention will readily apparent.

It is to be understood that chan s may be made in the construction and in t e combination and arrangement of the several A n parts, provided that such changes fall withl 1n the sco of the appended claim.

What claim is A boat having its hull constructed of plates having anges on some of their edges, the anges of each plate bein connected with the langes of adjacent p ates, means for fastening the other edges of each plate to other plates, T beams having their base parte connected with `the inner faces of the plates 'u and other T beams extending at rightangles to the first beams and having notches therein receiving portions of the other beams.

In testimony whereof I ailix m si ature. A

FRANK G. RIIM. 

